High school career

Castonzo attended Fork Union Military Academy in Virginia, where he was a two-way tackle for the Blue Devils and also saw action at the tight end spot, playing for Coach John Shuman. He previously attended Lake Zurich High School in Lake Zurich, Illinois.

Considered a two-star recruit by Rivals.com, Castonzo ranked No. 44 among prep school prospects in 2007. He did not have any major scholarship offers when he finished high school.

College career

Becoming the first true freshman to start on the Boston College offensive line since Paul Zukauskas in 1998, Castonzo helped hold opponents to only 61 tackles-for-loss (fifth in the nation) and 22 quarterback sacks in 2007. By protecting quarterback Matt Ryan at right tackle, he helped pave the way for the Eagles' 5,924 yards in total offense. Castonzo subsequently received All-ACC Freshman honors by The Sporting News and Freshman All-American honors by the Football Writers Association of America.

Prior to his sophomore season, Castonzo made the move from right tackle to left tackle where he started all 14 games in 2008. Boston College ranked 25th in the country in tackles for a loss allowed (4.77) and 49th in sacks allowed (1.69). Castonzo earned a College Football News All-Sophomore First Team selection.

In 2009, Castonzo was listed at No. 9 on Rivals.com′s preseason offensive tackle power ranking. Following a productive junior season, Castonzo was selected 2009 First Team All-Atlantic Coast Conference as voted on by the 40 members of the Atlantic Coast Sports Media Association. He set the record for career starts with 54 straight at Boston College and was a Rhodes Scholar nominee in 2010.

Professional career

2011 NFL Draft

Castonzo was selected by the Indianapolis Colts with the 22nd pick overall of the 2011 NFL Draft. He was the third offensive tackle off the board, after Tyron Smith and Nate Solder.

Indianapolis Colts

Castonzo became the Colts starting left offensive tackle for the 2011 season. He started 12 games during his rookie season and the Colts finished 2-14 without longtime starting quarterback Peyton Manning. On April 28, 2014, the Colts picked up the fifth-year, $7.438 million option in his rookie contract. In week 11 of the 2014 season, Castonzo recorded his first career reception and touchdown, catching a 1-yard TD pass from Andrew Luck. He played 1,115 snaps during the 2014 season, the most of any offensive lineman in the NFL.

[ Source: Wikipedia ]